WO1998033129A1 - Dispositif de traitement de donnees utilise dans un reseau de communication - Google Patents

Dispositif de traitement de donnees utilise dans un reseau de communication Download PDF

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Publication number
WO1998033129A1
WO1998033129A1 PCT/JP1998/000326 JP9800326W WO9833129A1 WO 1998033129 A1 WO1998033129 A1 WO 1998033129A1 JP 9800326 W JP9800326 W JP 9800326W WO 9833129 A1 WO9833129 A1 WO 9833129A1
Authority
WO
WIPO (PCT)
Prior art keywords
file
data
terminal device
host device
network terminal
Prior art date
Application number
PCT/JP1998/000326
Other languages
English (en)
Inventor
Hideo Suzuki
Original Assignee
Casio Computer Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP9345211A external-priority patent/JPH10333967A/ja
Application filed by Casio Computer Co., Ltd. filed Critical Casio Computer Co., Ltd.
Priority to EP98900760A priority Critical patent/EP0894307B1/fr
Priority to US09/142,431 priority patent/US6493743B2/en
Priority to DE69840846T priority patent/DE69840846D1/de
Publication of WO1998033129A1 publication Critical patent/WO1998033129A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/14—Details of searching files based on file metadata
    • G06F16/144—Query formulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
    • G06F16/168—Details of user interfaces specifically adapted to file systems, e.g. browsing and visualisation, 2d or 3d GUIs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/17—Details of further file system functions
    • G06F16/172—Caching, prefetching or hoarding of files
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/18—File system types
    • G06F16/182—Distributed file systems
    • G06F16/1824—Distributed file systems implemented using Network-attached Storage [NAS] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]

Definitions

  • the present invention relates to a data processing terminal device capable of accessing a host device via a communication network, downloading a variety of files, and executing a data processing.
  • LAN Local Area Network
  • NC network computers
  • An informatized network (for example, LAN) employing such an NC, has communication functions of accessing an intra-company server via an exclusive line and accessing a server of a communication service company via a public line. Further, such a network has processing functions of providing a variety of types of processing environment obtained by downloading the programs of a variety of types of software stored in these servers, via the respective communication lines, and saving and maintaining the result of a process obtained by processing data with an NC, in a server side.
  • the NC has relatively simplified data processing functions capable of downloading a variety of types of application programs which are batch-managed by a server, in accordance with necessity, and processing a downloaded program, in addition to the function as a client in the conventional client-server type data processing system.
  • the object is to realize the hardware structure of NC at low cost as compared to that of the conven- tional personal computer. Further, the object of an informatized network which employs such an NC is to reduce the system cost of the informatized network by carrying out the management and maintenance of application programs in a batch on the server side, so that the NC side is not required to do the management and maintenance of the application programs.
  • PDA personal digital assistant
  • the PDA is capable of accessing the intra-company server via an exclusive line, from outside, or accessing the server of the communication service company via a public line so as to send and/or receive data to and/or from the server, and the object of the PDA is to process data or save data to assist the work of the user.
  • the conventional NC has been proposed as an exclusive terminal device for the informatized network, to carry out the operation to access the server when necessary, and to download an application program file from the server, so as to realize an easy data processing function.
  • a series of operations for communication, carried out when downloading the application program file from the server are laborsome to the user, and in order to start an application, the operation of communication to access the server must be always conducted, thus complicating the starting operation for using an application program, and lowering the operability for the user.
  • the high level function PDA has the merit that the data processing functions similar to those of an NC can be utilized even outside; however a series of communication operations for downloading an application program file are troublesome to the user, thus complicating the starting operation for using an application program, and deteriorating the operability for the user.
  • the object of the present invention is to provide a data processing apparatus capable of downloading a necessary file from the host device connected via a communication network and immediately carry out the process of the downloaded file.
  • a network terminal device adapted to be connected to a host device, comprising memory means for storing files; means for displaying indication items for specifying the files, on a display screen; means for selecting a desired indication item from the indication items displayed on the display screen; means for determining whether or not a file corresponding to the indication item selected by said selecting means is stored in said memory means; means for downloading the file corresponding to the indication item selected by said selecting means from the host device to the memory means, when it is determined by said determining means that the file is not stored; and processing means for executing a process based on the file downloaded by said downloading meahs .
  • a network terminal device adapted to be connected to a host device, comprising means for requesting transmission of data in connection with files stored in the host device, to the host device; means for acquiring file indication data transmitted from the host device, in response to the data request; means for displaying indication items based on the file indication data acquired by said acquiring means, on a display screen; means for selecting a desired indication item from the indication items displayed on the display screen; and means for downloading the file corresponding to the indication item selected by said selecting means, from the host device.
  • a file corresponding to the selected indication item is downloaded automatically from the host device. Therefore, the process of the file can be immediately carried out.
  • FIG. 1 is a diagram showing the entire structure of an information network which utilizes a network applicable PDA to which is a first embodiment of the data processing apparatus of the present invention
  • FIG. 2 is a block diagram showing the structure of the main section in the PDA shown in FIG. 1;
  • FIG. 3 is a block diagram showing the structure of the main section in the host device shown in FIG. 1;
  • FIG. 4 is a flowchart illustrating the PDA processing executed by the PDA, and part of the ordinary processing
  • FIG. 5 is a flowchart illustrating other part of the ordinary processing, which follows FIG. 4;
  • FIG. 6 is a flowchart illustrating a host PC processing executed by the host PC
  • FIGS. 7A and 7B are diagrams showing display examples of the host PC
  • FIGS. 8A to 8D are diagrams showing display examples of the host PC
  • FIG. 9A is a diagram showing the entire structure of an information network according to a second embodiment of the data processing apparatus of the present invention.
  • FIG. 9B is a diagram illustrating the structure of a network terminal device according to the second embodiment
  • FIG. 9C is a diagram showing the structure of a user table
  • FIG. 9D is a diagram showing the structures of some of management files for individual users.
  • FIG. 10 is a flowchart illustrating the operation of the network terminal device in the second embodiment
  • FIG. 11 is a flowchart illustrating the operation of the server as the host device in the second embodiment
  • FIG. 12A is a diagram showing the entire structure of an information network according to a third embodiment of the data processing apparatus of the present invention.
  • FIG. 12B is a diagram illustrating the structure of a table used for individual users
  • FIG. 12C is a diagram showing the structure of a time zone table
  • FIG. 13 is a flowchart illustrating the operation of the network terminal device when starting the timer in the third embodiment
  • FIG. 14 is a flowchart illustrating the operation of the server as the host device in the third embodiment.
  • FIG. 15 is a flowchart illustrating the operation of a download request process for individual time zone, by the network terminal device in the third embodiment. Best Mode of Carrying Out the Invention
  • FIGS. 1 to 8D show the first embodiment of the network applicable type mobile terminal to which the data processing apparatus and storage medium of the present invention are applied.
  • FIG. 1 is a diagram showing the entire structure of an information network system in which a network applicable type mobile terminal 1 (to be abbreviated as PDA 1 hereinafter) of the embodiment is utilized.
  • PDA 1 network applicable type mobile terminal 1
  • the PDA 1 which is brought outside and a host PC (personal computer) 20 installed at home are connected to each other via a communication network N.
  • the host PC 20 is accessed by the PDA 1 via the communication network N, and an operational environment such as icon data of an application program file set to the host PC 20, is downloaded so as to set an operational environment similar to that of the host PC 20, to the PDA 1 and enable the selection of an application on the same operational environment.
  • the host PC 20 stores operational environment information such as icon data of an application program file, and a variety of application program files to a large capacity storage device 26 in advance, and transmits the operational environment information and an application program file to the PDA 1 upon a request from the PDA 1.
  • FIG. 2 is a block diagram showing the structure of the essential part within the PDA 1.
  • the PDA 1 consists of a CPU 2, an input device 3, a RAM 4, a display device 5, a small capacity memory device 6, a storage medium 7 and a communication device 8 , and all of these members except for the storage medium 7 are connected to a bus 9.
  • the CPU (central processing unit) 2 executes the initialization of data in the PDA 1 and the setting of a basic environment by the OS (operating system) program stored in advance in the small capacity memory device 6. Then, the CPU 2 is connected to the host PC 20 via the communication network N and thus the PDA process, which will be explained later, is executed. Further, a request for downloading all menu data is transmitted to the host PC 20, so as to download all the necessary data for displaying the menu from the host PC 20. At the same time, the application program file corresponding to the application icon is downloaded, and stored in the small capacity memory device 6. After that, a menu image containing the application icon, data file icon and the like is displayed on the display device 5, and a series of processing steps for starting the application is automatically executed.
  • the CPU 2 executes ordinary processing steps, which will be explained later, and displays a menu image on the display device 5 on the basis of all the menu data stored in the small capacity memory device 6 as downloading from the host PC 20 via the communication device 8 in the above-described PDA process. Then, an application program file or data file which is designated from those within the menu image is downloaded from the host PC 20 by the communication device 8 and stored in the small capacity memory device 6, and thus designated application program file is started to be executed. Subsequently, the CPU 2 stores different types of instructions or data input from the input device 3 in the RAM 4, and thus different types of processing are executed on the basis of the application program file or input data stored in the small capacity memory device 6 in accordance with the input instruction and input data. Then, the result of the process is displayed on the display device 5, and transferred to the host PC 20 via the communication network N to be stored.
  • the input device 3 includes a cursor key, numeral input keys, different types of function keys and the like, and a key-in signal of a pressed key is output to the CPU 2.
  • the RAM (random access memory) 4 provides a memory area which temporarily stores programs and data to be processed by the CPU 2.
  • the display device 5 is made of a liquid crystal display panel or the like, and displays data input from the CPU 2 and displays a menu image or the like, set for the PDA process executed by the CPU 2.
  • the small capacity memory device 6 includes a storage medium 7 having a memory capacity of about 300 MB (mega byte) as an area usable for application program files and data files excluding an area used by the OS program file.
  • the memory device 6 contains only the OS program file in advance, and serves to store application program files, data files and the like, downloaded from the host PC 20 in the PDA process by the CPU 2 as described above.
  • the storage medium 7 is made of a magnetic or optical storage medium, or a semiconductor memory, and it may be fixedly or detachably provided for the small capacity memory device 6.
  • programs, data and the like, to be stored in the storage medium 7 are received from other device than the host PC 20, which is connected via the communication network N by the communication device 8, or it is further possible that a memory device storing the above programs, data and the like is provided for the other device connected via the communication network N, and programs and data stored in the memory device in the other device are used via the communication network.
  • the communication device 8 has a connector detachable and connectable to the communication network N, and this device 8 is used to execute the communication process for downloading menu data, application program files, data files and the like, with respect to the host PC 20 in accordance with different types of communication commands instructed by the CPU 2 in the above ordinary process or PDA process.
  • FIG. 3 is a block diagram showing the structure of the essential part within the host PC 20 shown in FIG. 1.
  • the host PC 20 consists of a CPU 21, an input device 22, a RAM 23, a display device 23, a printing device 25, a large capacity storage device 26, a storage medium 27 and a communication device 28, and all of these members except for the storage medium 27 are connected to a bus 29.
  • the CPU 21 executes host PC processing steps, which will be explained later, and stands by for the reception of the process request signal from the PDA 1. For example, when a request signal for downloading the menu data is received from the PDA 1, all the menu data stored in the large capacity storage device 26 are read out and transmitted to the PDA 1. When a request signal for downloading the application program files is received from the PDA 1, the application program files stored in the large capacity storage device 26 are read out and transmitted to the PDA 1. When a request signal for downloading the file data is received from the PDA 1, the file data stored in the large capacity storage device 26 are read out and transmitted to the PDA 1.
  • the CPU 21 stores an OS program in the large capacity storage device 26, which is similar to that stored in the PDA 1, and application program files designated in accordance with the system, in a program storage area (not shown) in the RAM 23, and further stores various types of instructions or data input from the input device 22 in the RAM 23.
  • These processes are executed on the basis of the application program stored in the large capacity storage device 26 in response to the input instructions and input data, and the process results are stored in the RAM 23 and displayed on the display device 24. Further, the processing results stored in the RAM 23 are stored in a storage area within the large capacity storage device 26, which is instructed from the input device 22.
  • the input device 22 includes a cursor key, numeral input keys, different types of function keys and the like, and a key-in signal of a pressed key is output to the CPU 21.
  • the RAM 23 provides a memory area which temporarily stores programs and data to be processed by the CPU 21.
  • the display device 5 is made of a CRT (cathode ray tube) or the like, and displays data input from the CPU 21 and displays a menu image, and process- ing contents of different application program files, processed for the host PC process executed by the CPU 21.
  • the printing device 25 prints out printing data input from the CPU 21, on a predetermined printing sheet.
  • the large capacity storage device 26 includes a storage medium 27 having a memory capacity of about 3 GB (giga byte) capable of storing all of the application program files and data files set by the user, in its area except for that used by the OS program.
  • the storage medium 27 is made of a magnetic or optical storage medium, or a semiconductor memory, and it may be fixedly or detachably provided for the large capacity storage device 26.
  • the memory device 27 serves to store the system program, different types of application program files corresponding to the system, communication process program, communication state memory process program, timer process program, data processed by these processing programs, and the like.
  • programs, data and the like, to be stored in the storage medium 27 are received from other device which is connected via the communication network N or the like, or it is further possible that a memory device storing the above programs, data and the like is provided for the other device connected via the communication network, and programs and data stored in the memory device are used via the communication network.
  • the communication device 28 has a connector detachable and connectable to the communication network N, and this device is used to execute the communication process for downloading menu data, application program files, data files and the like, with respect to the PDA 1 in accordance with different types of requests issued from the PDA 1 in the above ordinary process or host PC process .
  • the PDA process and the ordinary process executed by the CPU 2 of the above-described PDA 1 will be described with reference to the flowchart illustrated in FIGS . 4 and 5.
  • the PDA 1 stores only the OS program file in the small capacity memory device 6, and when the PDA process as shown in FIG. 4 is started from this state, the initialization of the respective members of the PDA 1 is carried out on the basis of the OS program (step SI) .
  • a preset communication protocol is executed by the communication device 8 , and the PDA 1 is connected to the host PC 20 via the communication network N (step S2). Then, a menu download command is sent to the host PC 20 (step S3). It is determined whether or not there is a response from the host PC 20, to the menu download command (step S4). In other words, it is determined whether or not all the menu data for displaying the menu image set in the host PC 20, on the PDA 1, are received. In reply to the menu download command, the host PC
  • the 20 retrieves and extracts all the application program files stored in the host PC 20 and the file titles of all the data files which have linkages to these application program files, and transfers all the extracted file titles, the information of the hierarchical structure of the files (directory data), display screen setting contents (the contents of background, wall paper, screen saver and the like), the icon setting contents (data of the application icons of the application program files, which are displayed on the display image as icons) and the like, to the PDA 1 together with the response.
  • the PDA 1 stores all the menu data in the small capacity memory device 6 (step S5), and forms a menu image on the basis of the display image setting contents and icon setting contents, to be displayed on the display device 5 (steps S6 and S7).
  • step S5 For an application displayed as an icon on the menu image, in order to enable the immediate start of the application, an command for downloading the application program file which corresponds to the icon is sent to the host PC 20 by the communication device 8 (step S8).
  • step S9 the download of the application program file transferred from the host PC 20, in reply to the command for downloading the application program file, is started (step S9).
  • step S10 the download of the entire application program file is determined (step S10), the downloaded application program file is stored in the small capacity memory device 6 and then the communication network N connected to the host PC 20 by the communication device 8 is cut off (step Sll) .
  • step S12 the step proceeds to the ordinary process from the step S12.
  • various instructions from the user can be input from the input device 3 of the DPA 1.
  • step S13 the corresponding file titles are displayed on the menu image in accordance with the hierarchical structure of the file titles (steps S14 and S15).
  • step S16 When a desired menu item in the application menu image is selected (step S16), and the corresponding application program file is stored in the small capacity memory device 6 (step S17), the step proceeds to step S24 where the application program file is read out and developed in the RAM 4 so as to start it immediately, thus executing the application process (step S25) .
  • the connection to the host PC 20 is made via the communica- tion network N by the communication device 8 (step S18).
  • the corresponding file is downloaded from the host PC 20 (step S19) and further recent data files (for example, at least three files) of those corresponding to the application program file are downloaded (step S20) .
  • the communication network N connected to the host PC 20 by the communication device 8 is cut off (step S21) .
  • the icon of the application is formed (step S22), and thus formed new icon is displayed in the menu image (step S23).
  • step S24 the designated application is started (step S24), and the step proceeds to the application process (step S25).
  • the file data newly formed or updated as processed by the application process (step S25) are stored at a desired location in the hierarchical structure in the small capacity memory device 6 (step S26), and the file data and the location data of the hierarchical structured file data are transferred to the host PC 20 so as to update the memory contents of the host PC 20 (step S27), thus finishing this process.
  • the file environments for the PDA 1 and the host PC 20 can be made the same .
  • step S28 it is determined whether or not the corresponding data file is stored in the small capacity memory device 6 (step S28). In the case where the corresponding data file is stored, it is determined whether or not the application program file corresponding to the data file is stored in the small capacity memory device 6 (step S30). If the corresponding application program file is stored, the application is started (step S32) and the corresponding data file is opened (step S33) so as to immediately starting the application process.
  • the PDA 1 is connected to the host PC 20 by the communication device 8 with the communication network N, so as to download the corresponding date file from the host PC 20 (step S29).
  • the PDA 1 is connected to the host PC 20 by the communication device 8 with the communication network N, so as to download the corresponding application program file from the host PC 20 (step S31). Then, after the data file and the application program file downloaded are stored in the small capacity memory device 6, the communication network N connected to the host PC 20 by the communication device 8 is cut off.
  • step S32 the downloaded application is started (step S32), and the downloaded data file is opened (step S33) so as to immediately start the application process .
  • step S25 the step proceeds to step S25 in which file data is newly formed or updated by the application process.
  • the file data newly formed or updated as processed by the application process are stored at a desired location in the hierarchical structure in the small capacity memory device 6 (step S26), and the file data and the location data of the hierarchical structure file data are transferred to the host PC 20 so as to update the memory contents of the host PC 20 (step S27), thus finishing this process.
  • step PI when the CPU 21 starts the process using the host PC as a host PC, it is determined whether or not any request signal is received from the PDA 1 by the communication device 28 (step PI). In the case where there is no request signal received from the PDA 1, it is determined whether or not there is a PC operation from the input device 22 (step P2). In the case where there is no PC operation, the step goes back to step PI, whereas if there is a PC operation, the step proceeds to the process corresponding to PC.
  • step P3 In the case where there is a request command signal received from the PDA 1 and the content of the request command is the "menu download request command", all the application program files stored in the large capacity storage device 26 and the file titles of all the data files which have linkages to these applications are retrieved and extracted (step P3). Then, all the file titles extracted, the information of the hierarchical structure of the files (directory data), display image setting contents (the contents of background, wall paper, screen saver and the like), the icon setting contents (data of the application icons of the application program files, which are displayed on the display image as icons) and the like, are transferred to the PDA 1 together with a response (steps P4 and P5), and the step moves back to step PI.
  • step P6 the designated application program file is retrieved and extracted (step P6). Then, the application program file extracted is transferred to the PDA 1 (step P7), and the step moves back to step PI.
  • step P8 In the case where there is a request command signal received from the PDA 1 and the content of the request command is the "data file download request command”, the designated data file is retrieved and extracted (step P8). Then, the application program file extracted is transferred to the PDA 1 (step P9), and the step moves back to step PI.
  • step P10 In the case where there is a request command signal received from the PDA 1 and the content of the request command is the "file storage request command”, the data file and the location data of the hierarchical structure for storing the data file are received from the PDA 1 (step P10). Then, the contents of the data file stored at the corresponding location of the hierarchical structure in the large capacity storage device 26 are updated in accordance with the location data (step Pll), and the step goes back to step PI.
  • the PDA 1 of this embodiment executes the initialization and the basic environment setting according to the OS program, and then it is connected to the host PC 20 via the communication network N so as to carry out the PDA process. That is, a request command for downloading all the menu data is sent to the host PC 20, and all the application program files corresponding to the application icon are downloaded, to be stored in the small capacity memory device 6. After that, the menu image containing the application icon, the data file icon and the like is set and displayed on the display device 5, and a series of processing steps for enabling the start of an application are automatically carried out. Therefore, the user of the PDA 1 can skip the communication operation for manually downloading the application program files and data files from the host PC 20.
  • FIGS . 8A to 8D show display screen images of the PDA 1, and more specifically, FIG. 8A illustrates a display state in which all the necessary data for reproducing the status of the host PC 20 are received as the PDA process is started in order to reproduce the status of the host PC 20, FIG. 8B illustrates a display state after receiving all the data in FIG. 8A, FIG.
  • FIG. 8C illustrates a state in which a menu of a number of files (that is, application menu or data file menu) is displayed on the display screen shown in FIG. 8B
  • FIG. 8D illustrates a state in which a new icon is formed and displayed after a desired file is selected in FIG. 8C.
  • the same operational environment as that of the host PC 20 can be reproduced by forming a menu image from the menu data downloaded from the host PC 20. Therefore, it becomes possible for the user to be able to operate an application program file or data file at a place away from home, in the same operational environment as that of home, and therefore the operational efficiency at the place outside can be improved.
  • the icon of a file menu is displayed under the same file title as that set for the menu image of the host PC 20, and therefore the file operation can be carried out in the same operational environment as that of the host PC 20.
  • the image setting contents and icon setting contents similar to those set for the menu image of the host PC 20 are displayed, and therefore the file operation with the PDA 1 can be carried out in the same operational environment as that of the host PC 20.
  • the process for downloading the application program file is omitted, and the step proceeds immediately to the start of the application.
  • an unnecessary downloading process can be avoided, and therefore the processing efficiency in the PDA 1 can be improved.
  • the application program file corresponding to the application icon selected on the menu image is not stored in the small capacity memory device 6 of the PDA 1 itself, the following operations are automatically carried out, that is, the host PC 20 is accessed so as to download the corresponding application program file, and the application is thus started.
  • the user can skip the operation for downloading a not-yet registered application program file from the host PC 20.
  • the data file corresponding to the application is also downloaded, and when the application is started, the data file is also immediately opened. Therefore, it becomes possible for the user to carry out the process of the data file immediately after the icon-corresponding application thus downloaded is started, and the data processing efficiency can be improved.
  • the icon-corresponding application downloaded from the host PC 20 is displayed in the form of icon in the menu screen so that it can be identified, and therefore the user can easily identify an application downloaded from the host PC 20.
  • the host PC is accessed so as to download the corresponding data file, and further the application program file having a linkage to the data file is also downloaded. Therefore, the download operation for a data file which is not stored in the PDA 1 and the application corresponding to the data file can be omitted. As a result, the operability for the process of a data file can be improved.
  • the starting of the an application and the opening of a data file are carried out immediately after downloading the data file and the application program file, and therefore the operability of the steps up to the point where the application process for the downloaded data file is started, can be improved.
  • the process for downloading the data file and the linking application program file is omitted.
  • an unnecessary downloading process can be avoided, and therefore the processing efficiency in the PDA 1 can be improved.
  • the contents of the file data newly formed or updated as processed by the application process in the PDA 1 are transferred to the host PC 20 together with the location data of the hierarchical structure in the small capacity memory device 6 in the PDA 1, where the contents are stored.
  • the process for updating the memory contents stored at the same location of the hierarchical structure in the large capacity storage device 26 of the host PC 20 is automatically performed. Therefore, the user can skip the operation for transmitting the updated data file to the host PC 20 for updating, and the operational efficiency for the application process can be further improved .
  • FIG. 9A is a diagram illustrating the structure of a network system according to the second embodiment of the present invention.
  • a plurality of network terminal devices 200 are coupled with a server 300 serving as a host device, via a network 100.
  • each of the terminal devices 200 is a network personal computer (PC), which has a structure, for example, shown in FIG. 9B.
  • a computer main body 202 for controlling the entire system is shown, which includes an input device 204 such as a keyboard or mouse, a display device 206 such as a CRT, a printing device 208 such as a printer, and a memory device 210 such as a hard disk (HD), for storing data such as of an operating system (OS), device identification data for identifying a terminal device, various types of application program files and data files, program for initial download process, which will be later explained, and the like.
  • OS operating system
  • device identification data for identifying a terminal device
  • various types of application program files and data files program for initial download process
  • the computer main body 202 contains an internal memory 202A used as a work memory for executing programs stored in the memory device 210, and in the internal memory 202A, the above programs and other data are developed.
  • the memory device 210 is not of a type having a large capacity, and therefore, stores only the data for the OS or the download process which are stored in a portable recording medium 212 such as a floppy disk (FD) or CD-ROM and are read out by the recording medium driving device 214, or the data which are supplied from the server 300 on the network 100 via a communication interface 216.
  • a portable recording medium 212 such as a floppy disk (FD) or CD-ROM
  • Other applica- tion program files or data files are downloaded from the server 300 as needed, to be stored in the memory device 210.
  • the server 300 employs a memory device having a large capacity, in which user tables, management files for individual users, common management files, various types of application program files and the like are stored. Programs for processes corresponding to a download request from the OS or each terminal device 200 are stored in the memory device in advance or as read out from a portable recording medium. The rest of the structure is the same as that of the terminal device 200.
  • FIG. 9C is a diagram showing a user table made for the server 300, and in the table, information indicating data files recently used (for example, latest ten files) by the user, is appropriately rewritten and stored so as to correspond to the user identification data such as a password, and further a download setting flag for indicating whether or not the data file arbitrarily set by the user from the terminal device 200 should be downloaded is stored.
  • the user management file set up in the server 300 contains management file areas for individual users as shown in FIG. 9D, and the contents of the data file used by each user and personal data such as mail data or schedule data are stored in the management file.
  • FIG. 10 is a flowchart of the initial download process carried out by the computer main body 202 of the network terminal device 200
  • FIG. 11 is a flowchart illustrating the operation of the server 300, which corresponds to the above operation of the terminal device.
  • step S201 When the power of the network terminal device 200 is turned on, first the OS is started (step S201), and an initial screen image is displayed on the display device (step S202). Then, the terminal device 200 stands by for an input of a user identification data such as password, via the input device 204 (step S203).
  • a download request containing the user identification data and the terminal identification data of the terminal device 200, stored in the memory device 210 is transferred to the server 300 via the communication interface 216 (step S204), and the terminal 200 stands by for a response from the server 300 (step S205).
  • step S301 When the server 300 receives a download request from the terminal device 200 (step S301), the server 300 confirms whether or not user identification data is included in the request (step S302).
  • step S303 When there is user identification data, it is determined whether or not the data coincides with any user data registered in the user table (step S303). When the data coincides any user data registered, the terminal device 200 which made the request is specified on the basis of the terminal identification data, and a permission signal is transferred to the terminal device 200 (step S304).
  • the terminal device 200 when a response is received from the server 300 via the communication interface 216, determines whether or not the response is the permission signal (step S206). If it is the permission signal, the step proceeds to the next; however if it is not the permission signal, the initial download process is ended. In the case where a permission signal is received, it is determined whether or not the data file is transferred (step S207).
  • step S306 the data file recently used is read out from the management file area of the user management file, which is used for the user, on the basis of the data file information recently used and corresponding to the user, stored in the user table. Then, the read data file is transferred to the terminal device 200 which made the request (step S307) .
  • the initial download process is ended, whereas when data files are transferred, all the data files transferred are stored in the memory device 210 (step S208). After that, it is determined whether or not the corresponding application program file necessary for using the stored data files, is stored in the memory device 210 (step S209). When there is the corresponding application program file, the initial download process is ended. On the other hand, when there is no corresponding application program file, a request for downloading the corresponding application program file is made to the server 300 via the communication interface 216 (step S210), and the terminal device 200 is set in a standby state for the transfer of the application (step S211).
  • the server 300 determines whether or not there is a request of transferring an application program file, made by the terminal device 200 (step S308). When there is no such a request, the process corresponding to the download request is ended, whereas when there is such a request, the requested application program file is read out from the application area (step S309) and transferred to the terminal device 200 which made the request (step S310). Then, the process corresponding to the download request is ended.
  • the terminal device 200 When the terminal device 200 receives the corresponding application program file transferred, the received file is stored in the memory device 210 (step S213). Then, whether or not it is necessary to transfer the application program file corresponding to another data file, is determined (step S214) . When it is necessary, the step returns to step S210, and when it is not, the initial download process is ended.
  • the download request with the identification data unique to the user is transferred to the server 300 when starting the network terminal device 200. Further, the server 300 selects a predetermined file designated in advance from various files stored in the server and corresponding to the user of the identification data, and downloads the file to the network terminal device 200 which made the request. Therefore, the user need not at all to carry out the download process of a necessary file from the server 300 each time a request is issued.
  • FIG. 12A is a diagram showing the structure of a network system according to the third embodiment of the present invention, in which a plurality of network terminal devices 200 are coupled with a server 300 serving as a host device, via a network 100, as in the first embodiment.
  • the structures of the terminal devices 200 and the server 300 are similar to those of the first embodiment, except for the followings. That is, in this embodiment, each terminal device 200 stores user identification data, device identification data and time zone table in its memory device. Further, the terminal device 200 has a timer which measures time and starts the terminal device 200 at a predetermined time. Further, the server 300 stores a table for individual users, data files and application program files in its memory device .
  • FIG. 12B is a diagram showing the table for individual users, set in the server 300, and in the table, the data for specifying the data file and application program file to be downloaded initially in response to the user identification data are stored. It should be noted that the table for individual users may be set in the terminal device 200 side.
  • FIG. 12C is a diagram showing a time zone table set in the terminal device 200, and in this table, the time for carrying out the download, arbitrarily set by the user, and the data for specifying the data file and application program file to be downloaded, are stored together with the data for specifying the application program file to be deleted.
  • FIG. 13 is a flowchart illustrating the operation of the terminal device 200 started by the timer.
  • the OS starts (step S221), the user identification data and terminal identification data stored in the memory device are read out (step S222), and a download request containing the data indicating the initial start download and the data read out, is transferred to the server 300 (step S223).
  • FIG. 14 is a flowchart illustrating the operation of the server 300. As shown in the flowchart, when a download request is received from the terminal device 200 (step S321), it is, first, determined if user identification data is included (step S322). If there is such data, it is then determined whether or not the download request is made at the time of the initial start download (step S323).
  • the data file is read out from the memory device in accordance with the data file information of the initial download setting, which corresponds to the user identification data of the user table (step S324), so as to specify the terminal device 200 which made the request on the basis of the terminal identification data, and the data file read out is transferred to the terminal device 200 (step S325).
  • the terminal device 200 stands by for the transfer of the data file for a given time period.
  • the OS finishing operation is carried out (step S225) to finish the process.
  • the transferred file is stored in the memory device (step S225) .
  • the server 300 reads the application program file from the memory device in accordance with the application data of the initial download setting, which corresponds to the user identification data of the user table (step S326), and the data file read out is transferred to the terminal device 200 which made the request (step S327). Thus, the process is ended.
  • the terminal device 200 stands by for the transfer of the application program file for a given time period. In the case where there is no application program file transferred within that time period (step S228), the process proceeds to step S225. On the other hand, in the case where there is an application program file transferred within the given time period, the transferred application program file is stored in the memory device (step S229). Then, the process proceeds to step S225, and the OS finishing operation is carried out to finish the process . Next, when the time set as the download time in the time zone table comes , an interruption occurs to the computer main body of the terminal device 200, and the process shown in FIG. 15 is executed.
  • step S231 the user identification data and terminal identification data stored in the memory device are read (step S231), and further the data indicating the data file and application program file to be downloaded, which corresponds to the preset time, are read out from the time zone table (step S232). Then, the download request which contains the data indicating the time zone download, and the read-out data is transferred to the server 300 (step S233).
  • step S323 it further determines whether or not the download request received is a time zone download request (step S328). When it is not a time zone download request, the process is ended; however when it is a time zone download request, the data file request is read out from the memory device (step S329), and transferred to the terminal device 200 which made the request (step S330) .
  • the terminal device 200 stands by for the transfer of the data file for a given time period. In the case where there is no data file transferred within that time period (step S234), the process is ended. On the other hand, in the case where there is a data file transferred within the given time period, the transferred file is stored in a data area of the memory device (step S235). After the transfer of the data file, the server
  • step S331 the application program file and data file read out are transferred to the terminal device 200 which made the request (steps S332 and S333). Thus, the process is ended.
  • the terminal device 200 stands by for the transfer of the application program file for a given time period. In the case where there is no application program file transferred within that time period (step S236), the process is ended. On the other hand, in the case where there is an application program file transferred within the given time period, after ensuring an enough area in the memory device by deleting the application program file designated by the delete application data in the time zone table (step S237), the transferred application program file is stored in the memory device (step S238). Then, the data file recently used, and corresponding to the application program file transferred next, is stored in the memory device (step S239), and the process is ended.
  • the data file or application program file preset to be started by the timer is automatically downloaded, and therefore the necessary data file and application program file are already downloaded at the time when the user actually starts the terminal device 200.
  • the process can be carried out immediately after starting the device.
  • the data files and applications to be downloaded are set in time zones , and therefore only the necessary data file or application for a particular time zone can be automatically downloaded (for example, in the case where a certain application is needed in the afternoon though it is not necessary in the morning).
  • the necessary data file or application can be surely used in the necessary time zone.
  • the data file recently used in connection with the application is also automatically downloaded, and therefore the data file can be directly accessed.
  • the terminal device 200 is started by the timer of itself; however it is also possible that the time is monitored by the server 300 side, and when the start time comes, the power of the terminal device 200 is turned on by the server 300 via the network 100, to start the device.
  • the download time is set in the time zone table, and the process shown in FIG. 15 is automatically executed when the preset time comes.
  • a download request can be made at a desired time, and the time when the request is made is determined to which time zone the request time belongs.
  • the file is read on the basis of the file designation data set for that particular time zone, and the file is transmitted to the server 300.
  • the table is provided on the server 300 side, and in the case where the download time comes or a request is made from a terminal device 200, the file is read on the basis of the file designation data set for that particular time zone, and the file is transmitted to the terminal device 200.
  • a file corresponding to the selected indication item is downloaded automatically from the host device. Therefore, the process of the file can be immediately carried out.
  • the presence of the file can be determined at once.
  • a plurality of indication data related to various types of files stored in the host device are received from the host device to be displayed, and therefore a file corresponding to a desired indication data can be immediately downloaded by confirming files which can be downloaded from the host device, with the indication item displayed on the display screen. Further, since a particular file is automatically downloaded regardless of an instruction from the operator, during indication data are acquired, the process of the downloaded file can be immediately carried out.
  • the operation can be carried out without feeling a sense of difference from the operational environment for the host device.
  • the network terminal device to be connected to a host device
  • user identification data is notified to the host device and a file extracted on the basis of the user identifica- tion data on the host device side, is automatically received by the terminal device, and therefore the user can obtain the file necessary for the user immediately, to process it.
  • the notification is automatically carried out to the host device at the time of starting the network terminal device, the user does not have to be concerned with the download of the file from the host device. Also, of a great number of files corresponding to the user, only the selected one of them can be obtained automatically to process it.
  • the network terminal device is automatically started by a timer and a necessary file is automatically received from the host device to be stored, and therefore, in the case where the timer start time is set at the time before the user actually operates the device, the necessary file is already stored when the user starts the operation of the terminal device. Thus, the process can be immediately carried out.
  • the file corresponding to that time zone with reference to the present time is extracted, and thus the extracted file is transmitted to the terminal device. Therefore, only the file necessary for a particular time zone, is automatically downloaded, and the process of the file can be carried out.
  • time zone memory means since the time zone memory means is prepared, the setting or revision of data can be easily carried out. Also, the file indication data for specifying an unnecessary file for each time zone is stored, and therefore the unnecessary file can be automatically deleted.
  • a data processing apparatus capable of downloading a necessary file from the host device connected via a communication network and immediately process the file thus downloaded.

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Abstract

Un corps principal d'ordinateur (202) émet, au niveau d'un équipement terminal (200) de réseau, une demande de téléchargement comportant des données d'identification d'utilisateur, à destination d'un équipement hôte (300) par l'intermédiaire d'un réseau (100), lors du démarrage dudit équipement terminal (200). Dans l'équipement hôte (300) comportant divers types de fichiers correspondant aux données d'identification des utilisateurs, un fichier désigné qui est déterminé à l'avance par la table utilisateur, est sélectionné à partir du fichier de gestion des utilisateurs qui stocke divers types de fichiers correspondant à chacun des utilisateurs individuels, en réponse à la demande de téléchargement, et le fichier désigné est transféré à l'équipement terminal (200) du réseau qui en a fait la demande. Le fichier désigné est un fichier de données récemment utilisé.
PCT/JP1998/000326 1997-01-28 1998-01-27 Dispositif de traitement de donnees utilise dans un reseau de communication WO1998033129A1 (fr)

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EP98900760A EP0894307B1 (fr) 1997-01-28 1998-01-27 Dispositif de traitement de donnees utilise dans un reseau de communication
US09/142,431 US6493743B2 (en) 1997-01-28 1998-01-27 PDA workspace interface using application icons for downloading remote user file
DE69840846T DE69840846D1 (de) 1997-01-28 1998-01-27 Datenverarbeitungsnetzwerk für ein kommunikationsnetzwerk

Applications Claiming Priority (6)

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JP1419997 1997-01-28
JP9/14199 1997-01-28
JP8528197 1997-04-03
JP9/85281 1997-04-03
JP9/345211 1997-12-15
JP9345211A JPH10333967A (ja) 1997-04-03 1997-12-15 ネットワーク端末装置及び記録媒体

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EP (1) EP0894307B1 (fr)
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US20020007391A1 (en) 2002-01-17
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EP0894307B1 (fr) 2009-05-27
US6493743B2 (en) 2002-12-10

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